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Special cutter for spiral milling dimples of composite material

A composite material and helical milling technology, which is applied in the direction of milling cutters, manufacturing tools, milling machine equipment, etc., can solve the problem of less helical milling, reduce tool wear, reduce cutting load, and improve processing efficiency.

Inactive Publication Date: 2015-07-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few researches on helical milling in China. At the same time, due to the technical blockade abroad, the application of helical milling in the domestic aviation manufacturing industry is still blank.

Method used

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  • Special cutter for spiral milling dimples of composite material
  • Special cutter for spiral milling dimples of composite material
  • Special cutter for spiral milling dimples of composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 1 , figure 2 As shown in Fig. 1, a special tool for helical milling countersink made of composite materials is composed of an integrally formed cutter bar and a cutting part, wherein the cutting part includes three cutter teeth with the same structure, and there are spiral grooves between the cutter teeth, which are equally spaced Distribution; the cutting edge of the front end of the tool forms the top angle Φ of the tool, and the cutting edges on the teeth adopt the form of double flanks with margins, and a set of serrated cutting edges are ground on the margins of the double flanks of the cutting edge tooth. The diameter of the tool end is half of the diameter of the tool shank, and the tool apex angle formed by the front cutting edge is 100°; image 3 As shown, the two relief angles on the dual flank of the tool cutting edge , satisfy , Take 12°, Take 24°; the width of the tool margin is 0.8mm, the tooth spacing of the serrated cutting te...

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PUM

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Abstract

The invention discloses a special cutter for spiral milling dimples of a composite material. The cutter is composed of an integrated cutter bar and a cutting part. The maximum outer diameter of the cutting part is identical with that of the cutter bar; the cutting part comprises three cutter teeth with the same structure; spiral grooves are opened among the cutter teeth and are equally distributed; cutting edges of the front end of the cutter form a cutter apex angle [phi]=100-120 degrees; the cutting edges are all in double rear cutter face forms having edge lines; and a group of serrated cutting teeth on the edge lines of the double rear cutter faces. The special cutter can effectively prolong the service life of the cutter, increases the strength of the cutting part, enlarges heat radiating area, and increases surface smoothness of the dimples.

Description

technical field [0001] The invention relates to a special cutting tool for helical milling spot facing of composite materials, which belongs to the technical field of aircraft digital assembly finishing. Background technique [0002] Riveting is widely used in aircraft assembly, and the riveting process generally includes hole making and countersinking. At present, in the domestic aircraft assembly process, the processing of rivet holes and countersinks still adopts the traditional drilling method. However, with the wide application of new structural materials such as composite materials in the field of aviation assembly, the traditional drilling method is difficult to solve The delamination problem during material cutting and processing has been unable to meet the processing quality requirements of aircraft products. [0003] Compared with the traditional drilling process, the helical milling process is a discontinuous cutting process. During the process, the tool rotates ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C5/10
Inventor 刘刚张恒王亚飞柯臻铮柯映林董辉跃章明刘春毕华东
Owner ZHEJIANG UNIV
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